[
https://issues.apache.org/jira/browse/HIVE-6347?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13892600#comment-13892600
]
Gopal V commented on HIVE-6347:
-------------------------------
[~leftylev]: I will add the docs into the hive-site.xml in the next rev - was
waiting for HIVE-6346 to get pushed to branch.
[~brocknoland]: a != null is actually positive test, because it implies there
exists something (i.e it's presence). That is how rest of the ORC code deals
with optional feature/args (like SARGs).
> ZeroCopy read path for ORC RecordReader
> ---------------------------------------
>
> Key: HIVE-6347
> URL: https://issues.apache.org/jira/browse/HIVE-6347
> Project: Hive
> Issue Type: Bug
> Components: File Formats
> Affects Versions: tez-branch
> Reporter: Gopal V
> Assignee: Gopal V
> Attachments: HIVE-6347.1.patch
>
>
> ORC can use the new HDFS Caching APIs and the ZeroCopy readers to avoid extra
> data copies into memory while scanning files.
> Implement ORC zcr codepath and a hive.orc.zerocopy flag.
--
This message was sent by Atlassian JIRA
(v6.1.5#6160)
